tires is the biggest thing. im assuming your running rubber tires, but go with a softer compound. the 3.3 is a lot of motor for a 1/10 touring car, ive never run one, however i tried running my .21 tc3 on rubber tires, its not pretty. i myself wont touch rubber tires for a touring car, i go straight to foams. foam tires will wear faster, and yes they will chunk, however if you want to put the power down, even just bashing, its a good way to go. if you dont want to go that way, try some softer compound rubber tires.
if you look around online you should be able to find some setups for the 4tec.